Student Joan Baker, center, conjugates a verb in Spanish class in 1948. Richard Behan was a freshman in 1946 when he began snapping photos of Libertyville Township High School classmates for the school year book, The Nautilus. The photos in the...

Papers, Addresses, Reports: Evolution of Sex in the Mollusca (Address of the Retiring President); The 1937 Flood in Southern Illinois; Extract From the Report of the Section Chairman (Agriculture); Evening Schools for Adult Farmers; The Art and...

Papers, Addresses, Reports: On Popularizing Science; Geology of the Joliet District; The Genus Peperomia in Northeastern South America; The American Bithynia Not Wholly an Introduced Species; Growth of Diatoms in Relation to Dissolved Gases;...

Papers, Addresses, Reports: Geological Records of a Rhythmic Nature (Address of the Retiring President); Our Exhaustible Resources of Minerals - What Should Be the Aims of a Conservation Program?; Advances in the Natural Renewable Resources...